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JVC K2+HQCD Fever SelectEd Specials SET CD Records
Set D consists of 4 CDs:
Famous Overtures famous orchestral collection
Conducted by the Czech National Symphony Orchestra by the sought-after young conductor Marcello Rota, JVC has recorded many records for the group since 2004. "The Magic Flute", "The Serbian Barber", "The Force of Destiny", "The Magic Catapult", "Oberon", "William Retreat", "The Marriage of Figaro"... Each familiar melody sparkles with excellent acoustics.
Deng Taisong's Chopard Piano Sonata
Vietnamese pianist Deng Tai Song, known as the Prince of The Piano of Asia, won the 10th Chopin International Piano Competition in Warsaw in 1980, and he was the first Asian pianist to win this prize, and it was only 20 years later that China's Li Yundi won the competition again. Perhaps not good at public relations, Deng Taisong is not a first-line active musician, but after listening to his Chopin works, he will feel that his style is so delicate and not pretentious, lyrical and controlling, and has reached a balance between rationality and sensibility. He recorded almost all of Chopard's works at JVC, and each one of them is worth cherishing.
"The Violin Muse Violin Muse Violin Muse" Selected Works by Ikuko Kawai
Violinist Ikuko Kawai has an unassailable origin: graduated from Tokyo University of the Arts and is currently a professor at Osaka University of the Arts, but she cannot see the academic self-discipline in her, beautiful appearance and good figure, and the enthusiasm and feminine tone of the performance, making her a violin goddess. The album is a selection of her previous releases at JVC, such as "Goddess of Dawn", "Goddess of Muse", "Red Violin", "Roaring Hills", etc., and Hiroko Kawai used the 1715 Stradivari piano recording, the music is melodious, the sound is excellent.
"Ingrid Fuziko Hemming Melancholy Nocturne"
Most of them are Chopard's nocturnes, etudes, and preludes, plus sketches by Liszt, Schubert and others, so the subtitle is "The World's Most Beautiful Piano SketchEs". The performer, Fujiko Hemming, is a german-Japanese mixed-race boy who was born in Berlin during World War II. When she was preparing to go to Vienna to shine, she was completely deaf due to a high fever, and the suffering of Beethoven and Smeta was inflicted on the female pianist. In 1999, JVC rediscovered her, and the first album "Liszt-Zhong" actually set a record of 700,000 sales, and the subsequent 400,000 sales of a Chopin nocturne album were also quite amazing, winning the 2000 and 2001 Japanese Classical Music Record Awards, respectively, from JVC's compilation we can feel the beauty of her different music brought about by the "deaf curse".
Features of HQCD
1. The use of new raw materials HQCD using high-grade raw materials for the manufacture of LCD screens, because it has an incomparably superior injection molding precision, transparency, refractive index, can be the CD master signal more accurately recorded on the disc, and the CD signal reading more accurate, to obtain more perfect sound quality.
2． Special alloy sputtering reflective surface HQCD uses a special alloy coating material in the nanoscale, which has a reflectivity several times higher than that of ordinary CDs. This improved reflectivity of several times makes the mesh in the sound waveform clearer, which indicates that the ability to reproduce the CD master signal is also increased by several times.
3． The multiplication effect of the two factors above the two factors act at the same time, so that the finished optical CD of HQCD achieves the ultimate and perfect reproduction of the ultra-original sound quality close to the original music mastering.
Located in front of Jingu Shrine in Tokyo's Shibuya-ku, next to NHK, JVC Aoyama Flair Studio
The processing process of K2HD technology is not a simple decoding conversion
K2HD technology can retrieve the signal above 20kHz lost by traditional CDs, so the detail and air feel will be particularly good
From the oscilloscope, it can be seen more clearly that the traditional 44.1kHz/16Bit CD signal can be processed by K2HD to obtain the same amount of intelligence as 96kHz/24Bit
The latest K2HD technology can even extend and correct the sound signal of the network and broadcast
The K2 laser positioning recording technology developed by JVC japan is a legendary method that eliminates noise and any discrepancies that may be made in the laser optical reader on a CD turntable.
The K2 super digital encoder, developed exclusively by JVC, can perform analog/digital conversion, this 20bit, 128x supersampling analog/digital converter, which provides 108dB dynamic range, ± 0.05dB of flat sound curve, and greatly eliminates harmonic distortion of low frequency signals.
The 20-bit digital signal encoded by the K2 super digital encoder retains the integrity of the low-frequency signal when it is converted to 16-bit at 20-bit, and also ensures the range of true 16-bit recordings.
The above techniques allow the original sound to be faithfully presented. This product has been remastered by JVC with the K2 super analog mastering system.
Mastering is made entirely according to the 16bit/44.1KHz CD standard, so no special CD turntable or decoder is required to clearly show the unique superiority of K2 audio processing technology.
JVC is a true music expert.
For audiophiles, JVC records have two big contributions, one is K2 processing technology and the other is XRCD.
The K2 technology invented by JVC began with the surnames of two researchers at the time, Kuwaoka and Kanai. When the traditional music media changed from analog to digital 1 and 0, everyone thought that "digital music is a combination of 0 and 1 encoding, and the data will not change qualitatively", but JVC's recording engineers raised objections. They found that the music was too different from the original sound after being digitized, so they did a lot of research, perfecting the bad effects of the sound from analog to digital, and then from digital to analog, significantly improving the sound quality, and the production process that changed the sound quality was referred to as the "K 2 interface" by JVC. K2 technology uses a set of algorithms and high-bit digital conversion unique to JVC to restore some high-frequency signals that may be lost during CD suppression back to the CD, in short, K2 technology can improve the sound quality of the CD to the level of almost DVD-Audio, and improve the sound quality of MP3 and WMA to the level of almost CD. The sound quality of the K2 is not gorgeous, not over-processed or exaggerated. The philosophy of the JVC engineers is to "be the same as before" and completely restore the sound state in the studio. At first glance, when listening to the recording processed by K2, it is not amazing, the sound is not bright, but after a long time, you will find a great amount of information, a rich sense of layering and a warm tone, and you will not be tired after listening to it for a long time.
In 1987, the first generation of K2 technology was introduced, which claimed to be able to increase the 16Bit signal to 20Bit, which was not decoding, nor was it an upswing of the sampling frequency, but an expansion of the number of bits. Japan has done more research in this area, and we can divide bit expansion technology into two broad categories:
(1) Alpha treatment of Tianlong. Using approximate sine waves and smoothing processing to generate data with a lower four bits to form a smooth 20-bit signal, this bit-like expansion technique can be called a beautifying sound pattern.
(2) K2 processing of JVC. Since the 16-bit signal of the CD retains the pre-quantization information, the correction value is generated based on this information, and the signal is corrected to make the signal closer to the original sound, this type of bit expansion technology can be called the pursuit of the original sound pattern.
Shunji Kuwaoka, the inventor of K2 technology, said that although humans cannot hear signals above 20kHz, they can definitely feel these signals. In the K2 HD mastering system, the mastering will first be converted into a high-resolution version of 192kHz, and then the computer program will compare the extra signals above 20kHz, and then embed these UHF messages in the signal below 20kHz, so that when playing, it will feel as if "hearing" these signals that have disappeared in the CD. After the K2 circuit processing, the graininess of the sound, the sense of frustration and the sense of transparency have been improved, the background noise has decreased, the residual sound has been extended, the sense of presence has been significantly improved, and the timbre has become more natural. JVC is one of the few companies engaged in both music hardware development and music software production, K2 technology has been updating, 1996 launched XRCD, 1998 launched XRCD2, 1999 launched the second generation of K2, 2002 launched XRCD24, 2004 launched K2 HD technology, followed by HQCD, U-HQCD and other new products.
After the recording master tape is processed by K2, it needs to be pressed into a CD disc, and JVC first launched XRCD through in-depth research on the equipment and technology related to the process of disc pressing, and soon upgraded to XRCD2. The key is to control the time base with an exclusive master clock system in all aspects of CD production, so that the jitter distortion coefficient of the CD plate making and the group error coefficient of the glass master module are greatly reduced, the plate making accuracy is greatly improved accordingly, and the final CD is guaranteed to be close to the master to the greatest extent. The general CD processing process is to use the U-matic1630 format tape or PMCD, DDP tape carrier form to the processing plant to depress the tablet after mastering. After that, performers, producers, and sound recordists can only pray that the CDs that come out of the factory will not change much with the sound of their carefully created music, and there is no standard for sound judgment between the recording studio and the processing plant, even if the digital data is correct, it may not be able to ensure the highest sound quality. In addition, the cd production process is composed of a variety of equipment and technology, there are too many influencing factors, if you want to faithfully reproduce the sound on the original master, every small part of the processing must be carefully required.
The biggest role of K2 technology is to reduce the time base error, only by really reducing the time base error, can we get the correct digital signal. During the pressing process, the signal is first stored on Sony's MO disc, and the last series of K2 encoding, K2 laser engraving disc, and tablet pressing are all carried out in JVC's factory in Yokohama, and no one else is fake in the middle. Through SDIF-2 transmission (JVC believes it is better than the industry standard AES/EBU), and every link after that, JVC has put a lot of effort into clock accuracy, power purification, and wire connection to ensure that digital signals are not interfered with in any way. In order to maintain the advantages of the XRCD brand, JVC is extremely strict from the choice of audio mastering quality, plus it can only be produced in the Yokohama factory, because of these characteristics, even if you want to make illegal copies, processing without using XRCD technology, their advantages will not be revealed, so XRCD is also known as "discs that cannot be pirated". Or rather, XRCD is the perfect 16-bit, does not require any additional equipment, and can perform the highest acoustics of a CD on any record player.
In addition to JVC's own production of XRCDs, they later partnered with Memory Tech Co., Ltd., Japan's largest optical disc manufacturer, to produce HQCD. Compared with ordinary CDs, HQCD's innovation and superiority are manifested in three aspects:
(1) The use of new raw materials. The disc is made of polycarbonate material (Polycarbonate) material used to manufacture LCD light guide plates, which has superior transparency and refractive index, and can record the signal more accurately on the disc, which costs up to 36 times that of the average CD.
(2) The use of special alloy sputtering reflective surface. Ordinary CD surface coatings generally use aluminum alloys, while HQCD uses silver alloys, which have a much higher reflectivity than ordinary CDs, which greatly improves the correct rate of digital signal reading. The Red Book of Music CDs stipulates that the reflectivity of optical discs should reach more than 65%, and with the advancement of technology, the reflectivity of ordinary music CDs is currently about 78%, while HQCD is as high as 88%.
(3) Perfect mastering technology. HQCD mastering uses JVC Aoyama Studios' K2HD mastering technology (K2 High Definition codec) to load signals up to 100kHz wideband and 24-bit high resolution into the CD.
Later, Memory-Tech authorized Shanghai United Optical Company, and also opened a production line for HQCD, although the production process of pressing discs is the same, but the front end may not be processed by JVC as a Master, the cost has dropped, and the quality is uneven. Many HQCD launched by many domestic record companies in the later period, audiophiles have different evaluations, forcing the factory to launch the second generation of improved HQCDII., the same polycarbonate as the main material substrate, plus a patternless silver disc surface, and a reflective film composed of special alloys, three-pronged to make HQCDII. sound more slender, higher sense of scene. The biggest feature of HQCDII is the purple substrate, which can enhance the focusing ability of the red laser, read the data more accurately, and greatly improve the error rate of the reading. The second is that the printing surface of the disc is as simple as possible without pattern, so that when the light penetrates the disc, there is no reflectivity change caused by different shades. At this time, HQCDII has no relationship with JVC, and the K2 logo is no longer on the cover.
The "father of glass CDs" Higashi Ryoji has been constantly improving the technology, and the latest work is the Ultimate HQCD, which is currently only produced in Japan's Memory Tech. To put it bluntly, UHQCD is to transplant the process of glass CD to the production of HQCD, which uses photosensitive polymers instead of traditional polycarbonate materials to copy "data pits". In the normal environment, the photopolymer is in a liquid state, allowing the "liquid" to fill the entire "data pit" on the metal master plate, and then exposed to specific light waves to harden it, so it can perfectly and accurately copy the "data pit" on the metal master plate, coupled with a special alloy reflective film, its high-quality, plateau sound characteristics can not be achieved by traditional CDs. UHQCD emphasizes the original taste, so it has not cooperated with JVC for K2 treatment. In this way, the XRCD of JVC press in Japan or the first generation of HQCD can experience the benefits of real K2 technology. Where to find such a record?
Before the Spring Festival, Lai, the editor-in-chief of "New Sound", found a batch of HQCD produced by Japan's Memory Tech from the Tianyi Record warehouse many years ago, which was not only processed by JVC for K2, but even the music content was also a recording released by JVC. I heard that because the publicity was not in place, and at that time, it was not advertised as a recording of JVC, so the record company almost forgot that there was these stocks, and audiophiles had fewer opportunities to know, so "New Sound" decided to find them all out to feed audiophiles.
These are the sound recordists responsible for the post-K2 production processing